heating LEXUS RX350 2022 User Guide

2995-3. Using the air conditioning system and defogger
5
Interior features
Type A
Type B
■Operation condition
The engine switch is in IGNITION ON
mode.
■When the air conditioning system is
operating in front seat concentrated air-
flow mode (S-FLOW)
If a passenger is not detected in the front
passenger seat, the seat heater of the front
passenger’s seat will be turned off if on.
(  P.292)
■Customization
Some functions can be customized.
(  P.449)
When any switch is pressed, the system
is set to automatic mode and the
“AUTO” indicator (green) lights up.
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit) Mid (2 segments
lit)  Lo (1 segment lit) Off
The level indicator (green) lights up
during operation.
■Operation condition
The engine switch is in IGNITION ON
mode.
■When the air conditioning system is
operating in front seat concentrated air-
flow mode (S-FLOW)
If a passenger is not detected in the front
passenger seat, the se at ventilator of the
front passenger’s seat will be turned off if
on. ( P.292)
■Customization
Some functions can be customized.
( P.449)
WARNING
■To prevent overheating and minor
burn injuries
Observe the following precautions when
using the seat heaters.
●Do not cover the seat with a blanket or
cushion when using the seat heater.
●Do not use seat heater more than nec-
essary.
Seat ventilators (front seats)
A
B

4267-2. Steps to take in an emergency
1Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled down
sufficiently, inspect the hoses and radiator core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4
The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Radiator cap
5 Add coolant if necessary.
Water can be used in an emergency if
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
The needle of the engine coolant
temperature gauge ( P.75)
enters the red zone, or a loss of
engine power is experienced.
(For example, the vehicle speed
does not increase.)
 “Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.
 Steam comes out from under the
hood.
Correction procedures
A
B
A
B
C
D

482Alphabetical Index
BrakeBrake hold.......................................................182
Fluid ......................................................354, 436
Parking brake ................................................ 179
Warning light ............................................... 393
Brake assist .................................................... 265
Break-in tips...................................................... 151
Brightness control Instrument panel light control ................ 78
BSM (Blind Spot Monitor)....................... 232
Buzzer Hands off steering wheel warning (LTA)...........................................................................218
C
Care Exterior ........................................................... 336
Interior ............................................................. 339
Seat belts........................................................ 339
Wheels and wheel ornaments............ 336
Cargo capacity.................................... 155, 158
Cargo hooks ................................................. 309
Cargo net hooks .......................................... 309
Center Display .............................................280
Chains ...............................................................272
Child restraint system Fixed with a LATCH system .................. 54
Fixed with a seat belt...................................50
Front passenger occupa nt classification
system ............................................................. 39
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 57
Child safety Airbag precautions...................................... 36
Battery precautions ......................356, 425
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................ 297 How your child should
wear the seat belt
............................................................................. 27
Moon roof precautions.............................144
Panoramic moon roof precautions ....147
Power back door precautions ............... 101
Power window lock switch .....................142
Power window precautions .................... 141
Rear door child-protectors ................... 100
Seat belt extender prec autions.............. 27
Seat belt precautions .................................. 45
Child-protectors........................................... 100
Cleaning Exterior............................................................336
Interior .............................................................339
Radar sensor ................................................. 198
Seat belts ........................................................339
Wheels and wheel ornaments ............336
Clock ........................................................ 75, 323
Coat hooks..................................................... 323
Coin box.......................................................... 307
Compass ...........................................................331
Condenser ..................................................... 354
Console box .................................................. 305
Consumption screen .................................... 90
Cooling system............................................. 353 Engine overheating................................... 426
Cornering lights ............................................ 186 Replacing light bulbs................................375
Cruise control Dynamic radar cruise control with full-speed range ...................................... 222
Cup holders ................................................... 306
Current fuel consumption .......................... 80
Curtain shield airbags .................................. 30
Customizable features .............................. 449
D
Daytime running light system .................. 184
Defogger Outside rear view mirrors.................... 286
Rear window ............................................... 286
Windshield ................................................... 286

484Alphabetical Index
If the vehicle is submerged or water on the road is rising..................................... 385
If you have a flat tire ..................................406
If you lose your keys...................................419
If you think something is wrong ...........391
If your vehicle becomes stuck............. 428
If your vehicle has to be stopped in an
emergency ................................................384
If your vehicle needs to be towed ..... 387
If your vehicle overheats ........................ 426
Engine ACCESSORY mode ............................... 173
Compartment ...............................................351
Engine switch.................................................170
Fuel pump shut off system .................... 392
Hood................................................................ 349
How to start the engine ............................170
Identification number ................................. 431
If the engine will not start ........................ 418
If your vehicle has to be stopped in an
emergency ................................................384
Ignition switch (engine switch) .............170
Overheating................................................. 426
Tachometer ..................................................... 75
Engine coolant Capacity ......................................................... 434
Checking ....................................................... 353
Preparing and checking before winter........................................................................... 271
Engine coolant temperature gauge ........75
Engine immobilizer system ........................ 66
Engine oil Capacity ......................................................... 432
Checking .........................................................351
Preparing and checking before winter........................................................................... 271
Warning light ............................................... 394
Engine oil maintenance data .................. 353
Engine switch ..................................................170 Auto power off function ........................... 173
Changing the engine switch modes.. 173 If your vehicle has to be stopped in an
emergency ................................................ 384
EPS (Electric Power Steering) .............. 266 Warning light .............................................. 395
Event data recorder (EDR) ........................... 8
F
Flat tire Tire pressure warning system ............ 359
Vehicles with a spare tire...................... 406
Floor mats .......................................................... 24
Fluid Automatic transmission ..........................435
Brake ................................................................436
Washer .......................................................... 356
Fog lights Switch................................................................ 190
Footwell light .................................................300
Front automatic air conditioning system .......................................................................... 284
Front fog lights Replacing light bulbs................................375
Front passenger footwell hooks ............ 325
Front passenger occupant classification system .............................................................. 39
Front seats Adjustment ....................................................... 117
Cleaning .........................................................339
Correct driving posture ............................ 25
Driving position memory .........................129
Head restraints..............................................132
Memory recall function.............................. 131
Power easy access system .....................129
Seat heaters .................................................. 297
Seat position memory ...............................129
Seat ventilators ............................................ 297
Front side marker light Light switch .................................................... 184
Replacing light bulbs................................375
Front side marker lights Replacing light bulbs................................375
Wattage .......................................................... 437

488Alphabetical Index
Hood................................................................ 349
Outer foot lights Location......................................................... 300
Outside door handle lights......................300
Outside rear view mirrors Adjustment...................................................... 137
BSM (Blind Sport Monitor) ................. 232
Folding ............................................................. 138
Linked mirror function when reversing........................................................................... 137
Mirror position memory........................... 129
Outside rear view mirror defoggers286
RCTA function ............................................ 245
Outside temperature.....................................75
Overheating .................................................. 426
P
Paddle shift switches .......................... 176, 177
Panic mode ....................................................... 95
Panoramic moon roof Jam protection function............................146
Operation........................................................145
Parking assist sensor s (intuitive parking
assist) ............................................................. 238
Parking brake Operation........................................................ 179
Parking brake engaged warning buzzer............................................................................ 181
Warning light ...............................................399
Warning message........................................ 181
Parking lights Light switch .................................................... 184
Replacing light bulbs................................ 375
Parking Support Brake function (for rear-crossing vehicles) .......................... 260 Function ..........................................................260
Parking Support Brake function (static objects) ......................................................... 257 Function .......................................................... 257
PCS (Pre-Collision System) Function .......................................................... 204
PCS OFF switch ........................................206 Warning light .............................................. 398
Personal lights...............................................300
PKSA (Parking Support Alert) .............. 236
PKSB (Parking Support Brake)...............251 Warning message .....................................256
Power back door ............................................ 101 Hands Free Power Back Door ........... 104
Smart access system with push-button start ................................................................. 102
Power easy access system ........................129
Power outlets ................................................ 323
Power steering (Elect ric power steering
system) .......................................................... 266 Warning light .............................................. 395
Power windows Door lock linked window operation ... 141
Jam protection function ........................... 140
Operation ....................................................... 140
Window lock switch...................................142
Pre-Collision System (PCS) Function ..........................................................204
PCS OFF switch ....................................... 206
Warning light .............................................. 398
R
Radar cruise control (dynamic radar cruise control with full-speed range)............. 222
Radiator ........................................................... 354
RCTA Function ..........................................................245
Warning message ..................................... 246
RCTA (Rear Cross Traffic Alert) ......... 236
RCTA function ............................................. 246
Rear automatic air conditioning system .......................................................................... 294
Rear Cross Traffic Alert (RCTA) ......... 245
Rear door sunshades ................................. 325
Rear fog lights Switch................................................................ 190
Rear seats .......................................................... 118 Adjustment ....................................................... 119
Folding down the rear seatbacks ......... 119